I don't think he's going to tank and it's going to be impossible to separate the impact the EDH banning had from the metagame changes thanks to the top banning, but I wouldn't underestimate EDH's ability to impact prices. It's more widely played than legacy at this point (at least in my experience) and there is a sizable competitive contingent.Quote from Impossible »It might dip a little, but I seriously doubt EDH was the reason he's so expensive. He's a mythic from a set that was hardly opened and he sees fairly regular play in eternal formats. I suspect he'll end up going higher before long, even if he drops a bit in the short term from the ban.
Long term and barring a reprint, I definitely agree. That would be true regardless of banlist changes though.